I've realised one occurrence of a particular magic effect in my books behaves inconsistently with others, in that it lasts only hours rather than permanently.
I can see three options:
1, make it consistent even though this will mean having to majorly rework a scene and probably make it worse in other ways.
2, have a character speculate a fudge reason that risks drawing attention to it.
3, ignore it in the hope that no one will notice anyway, and if they do, it's far less egregious than some in other books.
Being lazy but particular about "magical physics", I'll probably end up with 2. I'm curious what other people do about similar situations.